didnt request a contract weve been put on!

*** - we are trying to port our lines, only to be told that we are on a biztalk account that only expires in January 2016. We have NO record of this. when I requested a signed copy of our contract, we were told there is not signature it was done through the call centre. I can never get hold of them to ask them for a copy of it. This, according to us was NEVER requested and if it was we would have required proof of it. we have had this account for many years now, and nothing has changed on it besides the fact that we cancelled our internet, so we would like for this contract to be cancelled please forthwith so that we can move forward with our business plans please. your urgent assistance is please needed. Thanking you.